Malicious PDF — malware analysis report

Static analysis result for SHA-256 70f4687b6a49e283…

MALICIOUS

PDF

78.1 KB Created: 2021-02-28 04:04:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 8d68a2d2c755273714003dfc133e3b04 SHA-1: bd06854c29cfdee44672dc85c826e87fbee56827 SHA-256: 70f4687b6a49e283c2da28299011a643e1eee50ba6c86d1b8eec5880826b217c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous external URIs, with a primary focus on golowaki.ru, disguised as a search result for a popular tutorial. The PDF's structure and embedded links suggest it's part of a link farm designed to redirect users to potentially malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://golowaki.ru/award?keyword=python+pandas+tutorial+for+beginners+youtube PDF link annotation
    • http://tosufiloxosi.66ghz.com/babototetufavave.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463808/normal_5ff9ec65b7df4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367304/normal_5fe81853786db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483345/normal_5fff397417aeb.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/jd0aZjb/fixowonev.pdfIn PDF document text
    • https://vazewelekataba.weebly.com/uploads/1/3/1/6/131606588/noxifijilonutur.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/Ggj5sjg/79969752848.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444357/normal_602edac9e82a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488316/normal_5ffcbf35ba433.pdfIn PDF document text
    • https://cdn.sqhk.co/tebolugex/Y5jfjfr/fijijojezo.pdfIn PDF document text
    • https://cdn.sqhk.co/vamapoludi/REigBKi/lozozap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tometubufimopim/cherry_tree_information_in_marathi_language.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/free_html_email_signature_template.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/apush_chapter_6_reading_guide.pdfIn PDF document text
    • http://rivebop.epizy.com/vibixidawo.pdfIn PDF document text
    • http://puxakuxuvon.epizy.com/building_information_modelling_for_construction_delay_management.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/kexaxinalupere.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/michel_foucault_space_power_and_knowledge.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE889 5428 bytes
SHA-256: 756016d0e915d7f6897f95c94a89ad513f6266f7635d04126730087bc9a1bed9
font_01_sfnt_off0000faea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEA 9888 bytes
SHA-256: 537bece850ffc479c5aaa30656d90b41dcac626d8c63c4a20b5a0421ba5a0dbb
font_02_sfnt_off00011cc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CC6 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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